commit ebb9cc4d7476dfb7a205251ab78a8a0fefc569fe
author danakj <danakj@chromium.org> Fri Mar 04 21:30:11 2022
committer Chromium LUCI CQ <chromium-scoped@luci-project-accounts.iam.gserviceaccount.com> Fri Mar 04 21:30:11 2022
tree 6c740462a7fc5404e8cc5f7cfb7b92f47eec64f8
parent c0e5398f60e06889e1925e052b59e9f22b522306

Add //testing/rust_gtest_interop when //testing/gtest is in deps

To make it simpler to add rust files to a unit test, act as if Rust
interop support is build into //testing/gtest. Then a person only needs
to add `rs_sources = [ "foo.rs" ]` to their test() target (as well as a
`rs_crate_root` for now), and their rust files will automatically get
the Rust gtest macros and run as part of their gtest binary.

We add //testing/rust_gtest_interop to rs_deps only if:
1. The target already depends on //testing/gtest, since otherwise it
   would not work.
2. The target defines a non-empty rs_sources; that is, they have Rust
   unit tests in the test() target.

R=johnchen@chromium.org

Bug: 1293979
Change-Id: Ia18d2dc89661ada05b6d96d15b5f2906a733f621
Cq-Include-Trybots: luci.chromium.try:android-rust-arm-rel,linux-rust-x64-rel
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3497966
Reviewed-by: Ben Pastene <bpastene@chromium.org>
Commit-Queue: danakj <danakj@chromium.org>
Cr-Commit-Position: refs/heads/main@{#977827}